Folding seat-stick.



W. MILLS.

FOLDING SEAT STICK.

APPLICATION FILED AUG-9.19M.

1,241,753. Patented Oct. 2,1917.

172 21. {2 J1 g t .11

UNITED STATES PATENT OFFICE.

WILLIAM MILLS, 0F BIRMINGHAM, ENGLAND.

FOLDING SEAT-STICK.

stick, in such a manner as to either close up together when not in use, or unfold when in use, the present improvements mainly consisting of so arranging the arms that the center of the flexible support when in use finds a bearing on the joint part of the head of the stick.

By means of this improvement the flexible strap is caused to accommodate the contours of the sitters anatomy instead of drawing the twoarms together and thereby causing an uncomfortable nipping of the oceupants seat.

In order that this invention may be clearly understood and readily carried into practice, reference may be had to the appended explanatory sheet of drawings, upon which Figure 1 is a part-sectional elevation of a folding seat stick accordin to the present invention showing the seat 1n the open position.

Fig. 2 is a plan with part broken away of the seat stick shown in Fig. 1.

Fig. 3 is a part elevation of the seat stick shown in Figs. 1 and 2, with the parts in the folded or collapsed condition.

Fig. 4 is a part-elevation of the seat stick shown in Figs. 1, 2 and 3, the aspect of elevation being at right angles to that in the case of Fig. 3.

In a convenient embodiment of this invention, the head or top of the stick is provided with a joint piece a to which projection lugs 12 on the arms 0 are pivoted, preferably by means of separate pins 0 which are each passed through each of the lugs to each arm and through the joint piece, and riveted at each end.

Alternatively, a separate pivot screw may be passed through a perforation in each lug and screwed into the side, a shoulder being provided upon the shank of the screw to Specification of Letters Patent.

Application filed August 9, 1915. Serial No. 44,550.

limit the inward screwing and to permit of the screw being tightly screwed up.

The arms are so shaped as to accommodate a joint piece a of substantial width between the lugs, so as to form a substantial bearing for the flexible strap (Z when in use.

In elevation the arms 0 are curved to form downward recesses (2 so as to form a recess at each side of the center to accommodate the seat of the occupant, and the flexible strap cl is attached to cross bars f arranged at the point near the upper part of the curve of the arms 0, such flexible strap d being so arranged that when sat upon it finds a bearing at the center upon the central joint piece a. At their inner extremities the arms are furnished with elongated transverse struts g, and the latter are adapted to engage with the sides of the support a and limit the downward movement of the arm 0. Such struts 9 also limit the upward movement of the arms in such a manner that when the arms are folded or collapsed they are retained in alinement with the stick.

011 plan the arms 0 are slightly curved inward at h for avoiding extreme pressure on the underside of the thigh, and are then gradually curved out again to the point where the cross bars f are provided, to which the ends of the flexible strap (Z are attached, the sides of such arms being then curved around to form a how i at each end, which bows act as a handle when the seat is closed up.

For the purpose of retaining the arms in the folded condition by a semi-locking connection, the locking and unlocking of which takes place automatically upon the ordinary closin or o enin of the arms the outer extremity or bowpart i of one arm iscentrally provided with a short projection 2' the head of which may be enlarged, and which projection is adapted to engage within a socket i provided in the adjacent face of the other arm. This socket 2' may or may not have a reduced neck, or it may be arranged at an incline and may have a shoulder at its one side.

A spring engagement between the projection and socket is provided for, this spring engagement being conveniently arranged for by placing the projection and socket slightly out of center, so that in order for the projection to enter the socket, one or both of the arms has to be constrained,

. the aforementioned curves h, one of the said bars-j being used: if desired for providing a projecting-stud is. upon which the: diskl for the footofthe stick can. be fixed when not in use, and. as the curves of the armswhen closed. form. a, curved projection at this point, as shown in 3, the arrangement permits of the pla'clng of the bottom half of the disk Z in the users pocket. for

supporting the stick: when not required to be carried by the hand.

The means permitting; of. the assemblage of the disk: Z upon the stud. k may be of any suitable or convenient form; 5

The bar f towhich the strap d is. fixed is preferably. ofsuch formthat the top part of the bar is slightly above the sides of the armssothat the. strap is at. each end raised a little above the sides of the arm, this assisting". in preventing: the under portion of the thigh from hearing againstthe sides. of the arms. The strap is preferably attached by being wrapped partially around. the bar f where. it. issecured on the inside either riveting to the bar, or by being.

porting arms, such springz washers; consist- I ing: of. a disk of spring. steel of wavy formationor of. other form adapted: to impart; the; desired resilience.

copies of, this patent may-be obtained for. five. cents each; byafldressingr. the. Gommissibner of. Patents,

Instead" of" providing for the attachment of the disk Z to a projectingstud such-as is,

said disk Z'may, when the arms are folded as shown in Fig. 3, be disposed between the commodatesthe contour of the body 2. A seat stick comprising" a rod, a;.pair. of downwardly bowed arms pivoted at. their inner ends to the head of the r0d, .suoh arms being, further curved inwardly toward their inner ends-,vand a strap; whoseends areconnested. adjacent the extremities of thearms, extending. so closely abovethe head -of the. rod, as to bear-thereon when in use-whereby" the strap accommodatesthe contour of the.

body I 3;. A- seat stick comprising; a rod; aepairof. yoke shaped arms-pivoted at their inner ends to the head'of. the'rod', cross bars: provided upon such arms adjacent their. ex-

tremities, such bars: being mounted above the arms and a: seat strap; whose ends are.

connected to the: bars such: strap: extending: so closely above the head: of. thewrod'. as. to bear thereon when. in use whereby said strap accommodates the contour ofthe body- 4. A seatvstiek comprisingqaa rod, pair of arms; being pivotedto theheadsof same at their innerendsg. locking. meansvprovijded' one of the arms and: a female. member secured to the outer end of the second arm,

spring engagement; betweenwthe. two being, effected by means of positioning them: slightly out, of center. i

at. the outer ends of. thearms,gcoinprising:a. male member secured to the outer endaof In witness whereof I have hereunto: sethand in-thepresence of tworwitnesses'af WILL AM MILns: Witnesses; i

ARTHUR. HENRY. Binowm HoLLIs FRANK Brown.

Washington, .1l. 0. 

